Flattr, an online micro-payment system which allows users to tip their favorite web site in the virtual world, can now be used offline as well. The Swedish company just joined the ever growing trend of QR codes and has released Flattr4Android, their new app for smart phones. By using Flattr4Android users can “Flattr” their favorite street musician or street artist just by scanning the QR code that the artist has created for themselves. The QR code then functions just like a tip jar, allowing you to put money into…
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